20515600

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{431}}^1$

素因数の和:473

約数の個数: 120

約数和(自身を含む): 59781888

約数和(自身を除く): 39266288

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 25, 28, 34, 35, 40, 50, 56, 68, 70, 80, 85, 100, 112, 119, 136, 140, 170, 175, 200, 238, 272, 280, 340, 350, 400, 425, 431, 476, 560, 595, 680, 700, 850, 862, 952, 1190, 1360, 1400, 1700, 1724, 1904, 2155, 2380, 2800, 2975, 3017, 3400, 3448, 4310, 4760, 5950, 6034, 6800, 6896, 7327, 8620, 9520, 10775, 11900, 12068, 14654, 15085, 17240, 21550, 23800, 24136, 29308, 30170, 34480, 36635, 43100, 47600, 48272, 51289, 58616, 60340, 73270, 75425, 86200, 102578, 117232, 120680, 146540, 150850, 172400, 183175, 205156, 241360, 256445, 293080, 301700, 366350, 410312, 512890, 586160, 603400, 732700, 820624, 1025780, 1206800, 1282225, 1465400, 2051560, 2564450, 2930800, 4103120, 5128900, 10257800, 20515600]

約数ペア:

[(1, 20515600), (2, 10257800), (4, 5128900), (5, 4103120), (7, 2930800), (8, 2564450), (10, 2051560), (14, 1465400), (16, 1282225), (17, 1206800), (20, 1025780), (25, 820624), (28, 732700), (34, 603400), (35, 586160), (40, 512890), (50, 410312), (56, 366350), (68, 301700), (70, 293080), (80, 256445), (85, 241360), (100, 205156), (112, 183175), (119, 172400), (136, 150850), (140, 146540), (170, 120680), (175, 117232), (200, 102578), (238, 86200), (272, 75425), (280, 73270), (340, 60340), (350, 58616), (400, 51289), (425, 48272), (431, 47600), (476, 43100), (560, 36635), (595, 34480), (680, 30170), (700, 29308), (850, 24136), (862, 23800), (952, 21550), (1190, 17240), (1360, 15085), (1400, 14654), (1700, 12068), (1724, 11900), (1904, 10775), (2155, 9520), (2380, 8620), (2800, 7327), (2975, 6896), (3017, 6800), (3400, 6034), (3448, 5950), (4310, 4760)]